<template>
  <el-form
    :model="loginForm"
    :rules="fieldRules"
    ref="loginForm"
    label-position="left"
    label-width="0px"
    class="demo-ruleForm login-container"
  >
    <span class="tool-bar">
      <!-- 主题切换 -->
      <theme-picker
        style="float:right;"
        class="theme-picker"
        :default="themeColor"
        @onThemeChange="onThemeChange"
      ></theme-picker>
    </span>
    <h2 class="title" style="padding-left:22px;">系统登录</h2>
    <el-form-item prop="account">
      <el-input type="text" v-model="loginForm.account" auto-complete="off" placeholder="账号"></el-input>
    </el-form-item>
    <el-form-item prop="password">
      <el-input type="password" v-model="loginForm.password" auto-complete="off" placeholder="密码"></el-input>
    </el-form-item>
    <el-form-item style="width:100%;">
      <el-button type="primary" style="width:48%;" @click.native.prevent="reset">重 置</el-button>
      <el-button
        type="primary"
        style="width:48%;"
        @click.native.prevent="login"
        :loading="loading"
      >登 录</el-button>
    </el-form-item>
  </el-form>
</template>

<script>
import { mapState } from "vuex";
import Cookies from "js-cookie";
import ThemePicker from "@/components/ThemePicker";
export default {
  name: "Login",
  components: {
    ThemePicker
  },
  data() {
    return {
      loading: false,
      loginForm: {
        account: "admin",
        password: "admin",
      },
      fieldRules: {
        account: [{ required: true, message: "请输入账号", trigger: "blur" }],
        password: [{ required: true, message: "请输入密码", trigger: "blur" }]
      },
      checked: true
    };
  },
  methods: {
    login() {
      this.loading = true;
      let userInfo = {
        account: this.loginForm.account,
        password: this.loginForm.password
      };
      this.$api.login
        .login(userInfo)
        .then(res => {
          if (res.code != 200) {
            this.$message({
              message: res.msg,
              type: "error"
            });
          } else {
            Cookies.set("token", res.data.token); // 放置token到Cookie
            sessionStorage.setItem("user", userInfo.account); // 保存用户到本地会话
            this.$store.commit("menuRouteLoaded", false); // 要求重新加载导航菜单
            this.$router.push("/"); // 登录成功，跳转到主页
          }
          this.loading = false;
        })
        .catch(res => {
          this.$message({
            message: res.message,
            type: "error"
          });
        });
    },
    reset() {
      this.$refs.loginForm.resetFields();
    },
    // 切换主题
    onThemeChange: function(themeColor) {
      this.$store.commit("setThemeColor", themeColor);
    }
  },
  beforeCreate() {
    // 确认是否登录
    const params = { account: "admin" };
    this.$api.login.verify(params).then(response => {
      console.log("verify: " + response);
      if (response.code != 200) {
        this.$message({
          message: response.msg,
          type: "error"
        });
      } else {
        this.$api.login.login2().then(res => {
          console.log(res.data);
          Cookies.set("token", res.data.token); // 放置token到Cookie
          sessionStorage.setItem("user", params.account); // 保存用户到本地会话
          this.$store.commit("menuRouteLoaded", false); // 要求重新加载导航菜单
          this.$router.push("/"); // 登录成功，跳转到主页
        });
      }
    });
  },
  computed: {
    ...mapState({
      themeColor: state => state.app.themeColor
    })
  }
};
</script>

<style lang="scss" scoped>
.login-container {
  -webkit-border-radius: 5px;
  border-radius: 5px;
  -moz-border-radius: 5px;
  background-clip: padding-box;
  margin: 100px auto;
  width: 350px;
  padding: 35px 35px 15px 35px;
  background: #fff;
  border: 1px solid #eaeaea;
  box-shadow: 0 0 25px #cac6c6;
  .title {
    margin: 0px auto 30px auto;
    text-align: center;
    color: #505458;
  }
  .remember {
    margin: 0px 0px 35px 0px;
  }
}
</style>